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<?php |
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declare(strict_types=1); |
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namespace Ray\Compiler; |
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use PhpParser\Node; |
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use PhpParser\Node\Arg; |
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use PhpParser\Node\Expr; |
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use PhpParser\Node\Scalar; |
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use Ray\Compiler\Exception\InvalidInstance; |
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use Ray\Di\InjectorInterface; |
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/** |
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* Value to code(Node) converter |
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*/ |
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final class Normalizer |
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{ |
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/** |
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* Normalizes a value: Converts nulls, booleans, integers, |
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* floats, strings and arrays into their respective nodes |
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* |
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* @param mixed $value The value to normalize |
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* |
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* @return Expr The normalized value |
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*/ |
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public function __invoke($value) : Expr |
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{ |
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if ($value === null) { |
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return new Expr\ConstFetch( |
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new Node\Name('null') |
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); |
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} |
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if (\is_bool($value)) { |
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return new Expr\ConstFetch( |
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new Node\Name($value ? 'true' : 'false') |
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); |
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} |
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if (\is_int($value)) { |
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return new Scalar\LNumber($value); |
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} |
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if (\is_float($value)) { |
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return new Scalar\DNumber($value); |
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} |
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if (\is_string($value)) { |
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return new Scalar\String_($value); |
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} |
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return $this->noScalar($value); |
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} |
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/** |
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* Return array or object node |
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* |
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* @param array<mixed>|mixed|object $value |
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* |
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* @return Expr\Array_|Expr\FuncCall |
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*/ |
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private function noScalar($value) : Expr |
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{ |
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if (\is_array($value)) { |
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return $this->arrayValue($value); |
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} |
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if (\is_object($value)) { |
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return $this->normalizeObject($value); |
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} |
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throw new InvalidInstance; |
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} |
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/** |
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* Return "unserialize($object)" node |
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* |
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* @param object $object |
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*/ |
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private function normalizeObject($object) : Expr\FuncCall |
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{ |
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if ($object instanceof InjectorInterface) { |
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return new Expr\FuncCall(new Expr\Variable('injector')); |
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} |
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$serialize = new Scalar\String_(\serialize($object)); |
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return new Expr\FuncCall(new Node\Name('unserialize'), [new Arg($serialize)]); |
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} |
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/** |
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* Return array value node |
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* |
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* @param array<int, mixed> $value |
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*/ |
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private function arrayValue($value) : Expr\Array_ |
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{ |
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$items = []; |
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$lastKey = -1; |
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foreach ($value as $itemKey => $itemValue) { |
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// for consecutive, numeric keys don't generate keys |
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if (null !== $lastKey && ++$lastKey === $itemKey) { |
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$items[] = new Expr\ArrayItem( |
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$this->__invoke($itemValue) |
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); |
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} else { |
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$lastKey = null; |
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$items[] = new Expr\ArrayItem( |
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$this->__invoke($itemValue), |
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$this->__invoke($itemKey) |
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); |
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} |
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} |
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return new Expr\Array_($items); |
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} |
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} |
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ray-di /
Ray.Di
